o mpu4 mpu4
TRANSCRIPT
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O http://www.youtube.com/watch?v=6LAT1gLMPu4
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Industrial Growth O Pollution of air, water, and soilO Dense human communities produce
much waste O Using up land and placing stress on
natural habitats
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Nonrenewable O NonrenewableO Resources such as ores of various
metals, oil, and coal that exist as finite deposits in Earth’s crust
O Cannot be replenished by natural processes as they are mined
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Fossil FuelsO Crude oil, coal, and natural gas
provide 86% of U.S. energy consumption
O 81% of world’s consumption
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TurbogeneratorsO Primary energy source is used to boil
water O This creates high-pressure steamO Steam drives a turbine- a
sophisticated wheelO Turbine connected to a generator O Coal, oil, and nuclear energy are
most commonly used as the primary energy source
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Gas turbinesO High pressure gases drive the
turbine O Usually natural gas is used
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RenewableO Biological resources that may be
renewed by reproduction and regrowth
O Conservation to prevent overcutting and to protect the environment is still required
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Renewable Energy Sources
O HydropowerO WindO SolarO BiomassO Geothermal
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O Groups of 3-4O Two groups per energy sourceO Presenting
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Rubric O Explanation for how this energy source
worksO At least 2 AdvantagesO At least 1 Disadvantage O About what percentage of the U.S.
energy is provided by this energy source?
O At least one interesting fact or any additional information
O Each member of the group participates and has a speaking role.
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Topics for FridayO Wolves in YellowstoneO Rabbits in AustraliaO Feral PigsO California CondorO Pro-Hunting and Anti-Hunting O Zebra Mussels O Kentucky ElkO Brook trout
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Biodiversity O Biodiversity- the variety of life on Earth O the sum total of the genetically based
variety of all organisms in the biosphere.
O Species diversity- number of different species
O Genetic diversity- variations of genes among members of a population
O Ecosystem diversity- dependent on interactions of species in a location
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Hotspots of Biodiversity
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Threats to Biodiversity O Habitat LossO Introduced or Non-native speciesO Pollution O Overexploitation
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Habitat LossO In a study, researchers examined
that in the U.S., habitat loss caused the greatest threat to biodiversity
O Ex: fragmentation of forests, coastal degradation
O 60% of coral reefs destroyed or on the verge of being destroyed
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